Witness Adds Thread to SAC Probe

A government informant has implicated a prominent former trader at SAC Capital Advisors, telling federal investigators the two swapped confidential stock tips for years, according to people briefed on the matter.

The connection between ex-SAC portfolio manager Dipak Patel and the undercover mole, a California-based former portfolio manager at an investment fund, hasn't previously been disclosed. Mr. Patel and his lawyer didn't...